Buy 2008 Audi A4 2.0L A/T Quattro Air Bag Impact Sensor (Front). A3; Front. A4; Front. Front seat. S4 - OEM Audi Part # 8P0955557 (8P0-955-557)

Sensor. Impact.
A Sensor to determine the location on the vehicle of Impact and the severity of the Impact to determine if and which air bags should be deployed. Air Bag. Ft. Pedal impc. PressSENS. Side.

Air Bag Impact Sensor

Fits A3, A4, RS4, S4, TT, TT RS, TTS

A3; Front. A4; Front. Front seat. S4, RS4; Front. TT.
Air Bag Crash Sensor - Repair or Replace
An airbag or SRS light can sometimes indicate a problem with the impact sensor on your 2008 Audi A4, particularly if it's been involved in a collision—at any speed. Have a technician inspect your vehicle's crash sensor.